$\frac{\sin \theta + \sin 3 \theta}{\cos \theta + \cos 3 \theta}$ નું મૂલ્ય શું છે?

  • A
    $\cos 2 \theta$
  • B
    $\cot 2 \theta$
  • C
    $\tan 2 \theta$
  • D
    $\operatorname{cosec} \theta + \sin \theta$

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